First optical identification of a supersoft X-ray source in M31P. Nedialkov, M. Orio, K. Birkle, C. Conselice, M. Della Valle, J. Greiner, E. Magnier and N. A. TikhonovA&A, 389 2 (2002) 439-445DOI: https://doi.org/10.1051/0004-6361:20020575
